Your Mission Senior Software Engineer Reports to: Engineering Team Lead Works closely with: Engineering Tech Lead, QA team members Software: C# Location: UK / Estonia / US (remote-friendly within these regions) Role purpose The Senior Software Engineer is a high-impact individual contributor who delivers complex work and raises the effectiveness of the team around them. This role exists to tackle technically challenging problems, support less experienced engineers, and contribute to sound technical decisions — all while remaining aligned with agreed architecture and standards. Experience and capabilities Strong experience as a software engineer in a production SaaS environment Proven ability to deliver complex, high-quality solutions Strong understanding of testing, performance, and maintainability Ability to mentor others and influence through example Sound technical judgement under pressure Why this role matters Senior engineers set the technical tone within teams. Done well, this role: Improves delivery quality and resilience Develops other engineers Reduces technical risk What You'll Bring To The Role Key responsibilities Technical delivery Design and implement complex features and improvements Take ownership of technically significant or high-risk work Ensure solutions are maintainable, testable, and well understood Help diagnose and resolve complex production issues Technical leadership (within the team) Provide guidance and mentoring to junior and mid-level engineers Contribute strongly to code reviews and design discussions Support the Engineering Tech Lead in maintaining technical quality Identify technical risks and raise them early Collaboration and quality Work closely with QA to ensure confidence in delivered changes Engage constructively with Product and other stakeholders as needed Balance pragmatism with long-term thinking What this role is not This is not a formal people management role This is not ownership of cross-team architecture This is not a substitute for a Tech Lead or Principal Engineer Senior engineers succeed by delivering difficult work and elevating others. Why us? Perks